Subject: Returned mail: see transcript for details

From: postmaster <[email-masked]>
Date: Mon, 18 Aug 2025 08:29:48 +0200

The original message was received at Mon, 18 Aug 2025 08:29:17 +0200
from:
[email-masked]

   ----- The following addresses had permanent fatal errors -----
[email-masked]
    (reason: 550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB1PEPF000509F8.eurprd02.prod.outlook.com 2025-08-18T06:29:48.407Z 08DDDBFF469C2EF0])

   ----- Transcript of session follows -----
... while talking to gavlefastigheter.se.:
>>> DATA
<<< 550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB1PEPF000509F8.eurprd02.prod.outlook.com 2025-08-18T06:29:48.407Z 08DDDBFF469C2EF0]
550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB1PEPF000509F8.eurprd02.prod.outlook.com 2025-08-18T06:29:48.407Z 08DDDBFF469C2EF0]
<<< 503 5.5.2 Need rcpt command [DB1PEPF000509F8.eurprd02.prod.outlook.com 2025-08-18T06:29:48.407Z 08DDDBFF469C2EF0]